ENCHYTR^EID^E 85 



5, 6, 5, o (XH), 5, 5, 5, 4, 4, 5, 4 4 etc - ; second specimen : lateral, 

 3, 3, 4, 4, 3, 4, 4, 4, 4, 4, o (XII), 3, 3, 4, 4, 3, 4, 3, etc. Clitellum 

 well marked. XI, XII, and XIII. Sexual papilla? small. Septal 

 glands typical. Brain almost square or slightly oblong, posteriorly 

 almost straight with a shallow emargination, the anterior arms thick. 

 Dorsal vessel rises posterior to clitellum. Spermathecae with a thick 

 apical ampulla and with a narrow duct, which is covered both at its 

 base and all along its sides with accessory glands ; the ampulla connects 

 with the intestine. Sperm-ducts narrow, coiled in XI. Sperm -funnels 

 thick and curved. Penial bulb oblong. Testes large, with many lobes 

 capped by comparatively large sperm-sacs. Ovaries multilobed, large. 



FIGS. 53 AND 54. Lumbricillus ritteri. 



Ventral glands in XIII to XVII, the individual glands being compara- 

 tively small, about four or five times as wide as the ganglion. Ne- 

 phridia with short anteseptal, posterior to which is the thick, opaque, 

 granulated neck of the main nephridial body. Color of formalin 

 specimens white, clitellum pink. 



Locality. Farragut Bay, Alaska, June 5, 1889, Prof. W. E. 

 Ritter. 



Characteristics. The spermathecae, the brain, and the ventral 

 glands are all characteristic of the species. The spermathecae possess 

 glands not only at the base, but also along the muscular duct. 



Testes. Testes large and completely fill the somites in which they 

 are situated. Consist of some twenty to twenty-five lobes each, each 



